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Diffstat (limited to 'results/classifier/118/unknown/1862874')
| -rw-r--r-- | results/classifier/118/unknown/1862874 | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/results/classifier/118/unknown/1862874 b/results/classifier/118/unknown/1862874 new file mode 100644 index 000000000..91b0f5609 --- /dev/null +++ b/results/classifier/118/unknown/1862874 @@ -0,0 +1,135 @@ +KVM: 0.877 +virtual: 0.849 +register: 0.839 +performance: 0.836 +user-level: 0.812 +permissions: 0.804 +debug: 0.803 +mistranslation: 0.802 +graphic: 0.801 +risc-v: 0.800 +x86: 0.797 +TCG: 0.795 +device: 0.785 +VMM: 0.778 +architecture: 0.777 +vnc: 0.774 +ppc: 0.771 +boot: 0.763 +hypervisor: 0.763 +assembly: 0.751 +semantic: 0.750 +peripherals: 0.747 +network: 0.744 +arm: 0.741 +socket: 0.730 +i386: 0.712 +kernel: 0.711 +files: 0.704 +PID: 0.680 + +java may stuck for a long time in system mode with "-cpu max" + +Bug Description: +Run "java -version" in guest VM, java may stuck for a long time (several hours) and then recover. + +Steps to reproduce: +1. Launch VM by attached simple script: launch.sh +2. Execute "java -version" and then print "date" in a loop + while : + do + /home/bot/jdk/bin/java -version + date + done +3. A long time gap will be observed: may > 24 hours. + +Technical details: +* host: x86_64 Linux 4.15.0-70-generic +* qemu v4.2.0 +* java: tried two versions: openjdk-11-jre-headless or compiled java-13 +* command-line: (See details in launch.sh) +/home/bot/qemu/qemu-build/qemu-4.2.0/binaries/bin/qemu-system-x86_64 \ + -drive "file=${img},format=qcow2" \ + -drive "file=${user_data},format=raw" \ + -cpu max \ + -m 24G \ + -serial mon:stdio \ + -smp 8 \ + -nographic \ +; + +* Observed by java core dump generated by "kill -SIGSEGV" when java stucked: +Different pthreads are blocked on their own condition variables: + + Id Target Id Frame + 1 Thread 0x7f48a041a080 (LWP 22470) __GI_raise (sig=sig@entry=6) + at ../sysdeps/unix/sysv/linux/raise.c:51 + 2 Thread 0x7f487197d700 (LWP 22473) 0x00007f489f5c49f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f48980197c0) + at ../sysdeps/unix/sysv/linux/futex-internal.h:88 + 3 Thread 0x7f4861b89700 (LWP 22483) 0x00007f489f5c4ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f4861b88960, expected=0, + futex_word=0x7f489801b084) + at ../sysdeps/unix/sysv/linux/futex-internal.h:142 + 4 Thread 0x7f4861e8c700 (LWP 22480) 0x00007f489f5c76d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x7f48980107c0) + at ../sysdeps/unix/sysv/linux/futex-internal.h:205 + 5 Thread 0x7f4861c8a700 (LWP 22482) 0x00007f489f5c4ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f4861c89800, expected=0, + futex_word=0x7f489801ed44) + at ../sysdeps/unix/sysv/linux/futex-internal.h:142 + 6 Thread 0x7f48a0418700 (LWP 22471) 0x00007f4880b13200 in ?? () + 7 Thread 0x7f48703ea700 (LWP 22478) 0x00007f489f5c49f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f489801dfc0) + at ../sysdeps/unix/sysv/linux/futex-internal.h:88 + 8 Thread 0x7f48702e9700 (LWP 22479) 0x00007f489f5c49f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f489838cd84) + at ../sysdeps/unix/sysv/linux/futex-internal.h:88 + 9 Thread 0x7f4870f71700 (LWP 22475) 0x00007f489f5c49f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f489801a300) + at ../sysdeps/unix/sysv/linux/futex-internal.h:88 + 10 Thread 0x7f487187b700 (LWP 22474) 0x00007f489f5c76d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x7f48980cf770) + at ../sysdeps/unix/sysv/linux/futex-internal.h:205 + 11 Thread 0x7f4871a7f700 (LWP 22472) 0x00007f489f5c76d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x7f489809ba30) + at ../sysdeps/unix/sysv/linux/futex-internal.h:205 + 12 Thread 0x7f4861d8b700 (LWP 22481) 0x00007f489f5c4ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f4861d8a680, expected=0, + futex_word=0x7f489801ed44) + at ../sysdeps/unix/sysv/linux/futex-internal.h:142 + 13 Thread 0x7f48704ec700 (LWP 22477) 0x00007f489f5c4ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f48704eb910, expected=0, + futex_word=0x7f489801d120) + at ../sysdeps/unix/sysv/linux/futex-internal.h:142 + 14 Thread 0x7f4870e6f700 (LWP 22476) 0x00007f489f5c4ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f4870e6eb20, expected=0, + futex_word=0x7f489828abd0) + at ../sysdeps/unix/sysv/linux/futex-internal.h:142 + + + +Have you tried with KVM ("-M accel=kvm")? + +Please try "strace -o /var/tmp/java.log -f java -version" and upload the strace. If the strace is very large, it's probably safe to remove everything after around 10 seconds. + +The QEMU project is currently moving its bug tracking to another system. +For this we need to know which bugs are still valid and which could be +closed already. Thus we are setting the bug state to "Incomplete" now. + +If the bug has already been fixed in the latest upstream version of QEMU, +then please close this ticket as "Fix released". + +If it is not fixed yet and you think that this bug report here is still +valid, then you have two options: + +1) If you already have an account on gitlab.com, please open a new ticket +for this problem in our new tracker here: + + https://gitlab.com/qemu-project/qemu/-/issues + +and then close this ticket here on Launchpad (or let it expire auto- +matically after 60 days). Please mention the URL of this bug ticket on +Launchpad in the new ticket on GitLab. + +2) If you don't have an account on gitlab.com and don't intend to get +one, but still would like to keep this ticket opened, then please switch +the state back to "New" or "Confirmed" within the next 60 days (other- +wise it will get closed as "Expired"). We will then eventually migrate +the ticket automatically to the new system (but you won't be the reporter +of the bug in the new system and thus you won't get notified on changes +anymore). + +Thank you and sorry for the inconvenience. + + +[Expired for QEMU because there has been no activity for 60 days.] + |